Works
- Communication and Persuasion: Psychological Studies of Opinion Change, 1953
- Victims of Groupthink, 1972
- Groupthink: Psychological Studies of Policy Decisions and Fiascoes, 1982
In Tactics of Organizational Politics
Ideas
Groupthink. In cohesive decision-making groups, the drive for agreement can override realistic appraisal of alternatives. Janis drew the idea from case studies of policy fiascoes such as the Bay of Pigs invasion and listed symptoms including an illusion of unanimity, self-censorship, direct pressure on dissenters, and self-appointed guardians who screen the leader from unwelcome information. Caveat: The evidence is mainly qualitative case studies. Kramer (Organizational Behavior and Human Decision Processes, 1998) reexamined the Bay of Pigs and Vietnam cases with later evidence and concluded the hypothesis overstates small-group dynamics and understates political calculation.
Remedies for groupthink. Janis proposed remedies, which he presented as hypotheses to be tested: assign every member the role of critical evaluator, have the leader withhold a preferred answer at the start, set up parallel groups on the same question, bring in outside experts to challenge the group, appoint a devil's advocate at each meeting, and hold a second-chance meeting to air remaining doubts before a final decision.
What it explains
Janis explains how a leadership group can talk itself into a bad decision without anyone being coerced: dissent is withheld, doubts are filtered out, and silence is read as agreement. The conditions he described, including insulation from outside views and a leader who signals a preferred answer, are the ones a sponsor can arrange.
Tactics that draw on Irving L. Janis (26)
- All Hands Emergency
- Appointed Devil's Advocate
- Artificial Harmony
- Board Whispering
- Challenging Inconvenient Data
- Chief of Staff Wall
- Chilling Effect
- Closed Strategy Circle
- Committee Stacking
- Constructive Criticism Trap
- Crisis Manufacturing
- Curated Expert Panel
- Echo Chamber Construction
- Executive Session Exclusion
- Lone Dissenter Illusion
- Loyalist Enforcer Cohort
- Methodology Purity Test
- No Bad News Culture
- Perpetual Crisis
- Protégé Farm System
- Purge of the Moderates
- Royal Court Syndrome
- Sabotage War-Gaming
- Shadow Governance
- Veto Shadow
- Yes-Man Filter
In Thinking Tools
Known for
A Yale research psychologist who named groupthink, the pressure for agreement in a cohesive group that overrides realistic appraisal of alternatives, from case studies of foreign policy fiascoes such as the Bay of Pigs. He recommended remedies including an assigned devil's advocate.
Caveat: Empirical tests have given the full groupthink model only partial support, and later historical work has questioned some of his case readings.